/*
- * Copyright (C) 2011 - David Goulet <david.goulet@polymtl.ca>
+ * Copyright (C) 2011 David Goulet <david.goulet@polymtl.ca>
*
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License, version 2 only,
- * as published by the Free Software Foundation.
+ * SPDX-License-Identifier: GPL-2.0-only
*
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License along
- * with this program; if not, write to the Free Software Foundation, Inc.,
- * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
-#define _GNU_SOURCE
+#define _LGPL_SOURCE
#include <popt.h>
#include <stdio.h>
#include <stdlib.h>
static char *opt_session_name;
+#ifdef LTTNG_EMBED_HELP
+static const char help_msg[] =
+#include <lttng-set-session.1.h>
+;
+#endif
+
enum {
OPT_HELP = 1,
OPT_LIST_OPTIONS,
{0, 0, 0, 0, 0, 0, 0}
};
-/*
- * usage
- */
-static void usage(FILE *ofp)
-{
- fprintf(ofp, "usage: lttng set-session NAME [OPTIONS]\n");
- fprintf(ofp, "\n");
- fprintf(ofp, "Options:\n");
- fprintf(ofp, " -h, --help Show this help\n");
- fprintf(ofp, " --list-options Simple listing of options\n");
- fprintf(ofp, "\n");
-}
-
/*
* Print the necessary mi for a session and name.
*/
static int set_session(void)
{
int ret = CMD_SUCCESS;
+ int count, i;
+ unsigned int session_found = 0;
+ struct lttng_session *sessions;
if (opt_session_name && strlen(opt_session_name) > NAME_MAX) {
ERR("Session name too long. Length must be lower or equal to %d",
NAME_MAX);
ret = CMD_ERROR;
+ goto end;
+ }
+
+ count = lttng_list_sessions(&sessions);
+ if (count < 0) {
+ ret = CMD_ERROR;
+ ERR("%s", lttng_strerror(count));
+ goto end;
+ }
+
+ for (i = 0; i < count; i++) {
+ if (strncmp(sessions[i].name, opt_session_name, NAME_MAX) == 0) {
+ session_found = 1;
+ break;
+ }
+ }
+
+ if (!session_found) {
+ ERR("Session '%s' not found", opt_session_name);
+ ret = CMD_ERROR;
goto error;
}
ret = CMD_SUCCESS;
error:
+ free(sessions);
+end:
return ret;
}
while ((opt = poptGetNextOpt(pc)) != -1) {
switch (opt) {
case OPT_HELP:
- usage(stdout);
+ SHOW_HELP();
goto end;
case OPT_LIST_OPTIONS:
list_cmd_options(stdout, long_options);
goto end;
default:
- usage(stderr);
ret = CMD_UNDEFINED;
goto end;
}
opt_session_name = (char *) poptGetArg(pc);
if (opt_session_name == NULL) {
ERR("Missing session name");
- usage(stderr);
ret = CMD_ERROR;
goto end;
}
ret = ret ? ret : LTTNG_ERR_MI_IO_FAIL;
}
- /* Overwrite ret if an error occured during set_session() */
+ /* Overwrite ret if an error occurred during set_session() */
ret = command_ret ? command_ret : ret;
poptFreeContext(pc);